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1988年Hilal首次报道了用金属圈行动脉瘤闭塞,现已有很多改进。各种不同大小和形状的金属圈可沉积在动脉瘤囊内,并可使更多的同质物充填囊
Hilal first reported in 1988 the use of metal aneurysm occlusion, there have been many improvements. A variety of different size and shape of the metal ring can be deposited in the aneurysm sac, and can make more homogeneous stuffing capsule